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int pcre_get_named_substring(const pcre *code,
const char *subject, int *ovector,
int stringcount, const char *stringname,
const char **stringptr);
This is a convenience function for extracting a captured substring by
name. The arguments are:
code Compiled pattern
subject Subject that has been successfully matched
ovector Offset vector that pcre_exec() used
stringcount Value returned by pcre_exec()
stringname Name of the required substring
stringptr Where to put the string pointer
The memory in which the substring is placed is obtained by calling
pcre_malloc(). The convenience function pcre_free_substring() can be
used to free it when it is no longer needed. The yield of the function
is the length of the extracted substring, PCRE_ERROR_NOMEMORY if suffi-
cient memory could not be obtained, or PCRE_ERROR_NOSUBSTRING if the
string name is invalid.
There is a complete description of the PCRE native API in the pcreapi
page and a description of the POSIX API in the pcreposix page.